The Complexity of Boundedness for Guarded Logics
The Complexity of Boundedness for Guarded Logics
复制标题
受保护逻辑的有界性的复杂性
DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
M. V. Boom
中科院分区:
文献类型:
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作者:
Michael Benedikt;B. T. Cate;Thomas Colcombet;M. V. Boom
Given a formula phi(x, X) positive in X, the bounded ness problem asks whether the fix point induced by phi is reached within some uniform bound independent of the structure (i.e. Whether the fix point is spurious, and can in fact be captured by a finite unfolding of the formula). In this paper, we study the bounded ness problem when phi is in the guarded fragment or guarded negation fragment of first-order logic, or the fix point extensions of these logics. It is known that guarded logics have many desirable computational and model theoretic properties, including in some cases decidable bounded ness. We prove that bounded ness for the guarded negation fragment is decidable in elementary time, and, making use of an unpublished result of Colcombet, even 2EXPTIME-complete. Our proof extends the connection between guarded logics and automata, reducing bounded ness for guarded logics to a question about cost automata on trees, a type of automaton with counters that assigns a natural number to each input rather than just a boolean.
DOI:
10.2168/lmcs-10(3:2)2014
发表时间:
2011
期刊:
Log. Methods Comput. Sci.
影响因子:
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作者:
Achim Blumensath;Martin Otto;Mark Weyer
通讯作者:
Mark Weyer
DOI:
10.14778/2350229.2350250
发表时间:
2012
期刊:
Proc. VLDB Endow.
影响因子:
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作者:
V. Bárány;B. ten Cate;M. Otto
通讯作者:
M. Otto